When the phone's screen goes black, after a minute or so, I cannot wake the screen most of the time by double tapping or pushing the power button. A few times it will work by tapping the screen or pushing the power button. And sometimes it takes several attempts. But most of the time I can't wake it up unless I plug in a charger or headphones or to take the battery out and restart the phone every time!!!

When the phone's screen goes black, after a minute or so, I cannot wake the screen most of the time by double tapping or pushing the power button. A few times it will work by tapping the screen or pushing the power button. And sometimes it takes several attempts. But most of the time I can't wake it up unless I plug in a charger or headphones or to take the battery out and restart the phone every time!!!